1.Clinical observation of GEM+NVB regimen in retreatment of 24 Advanced NSCLC treated by TAX+DDP regimen
Tong ZHANG ; Guoping REN ; Zhenhai ZHANG
Cancer Research and Clinic 2000;0(01):-
Objective To appraise the efficacy,survival rate and toxicity of GEM+NVB regimen in retreatment of 24 Advanced NSCLC treated by TAX+DDP regimen.Methods 24 patients with Advanced NSCLC received chemotherapy of GEM+NVB regimen.We evaluate the efficacy,survival rate and toxicity after two periods.Results Among these 24 patients,there was no complete response.Rates of partial response is 29.2 %,the average survival period is 28 weeks.One year survival rate is 34.3 %.Conclusions GEM+NVB regimen is effective as second-line chemotherapy for the Advanced NSCLC patients that have ever been treaded by TAX+DDP regimen.
2.Preparation and application on compound excipient of sodium stearyl fumarate and plasdone S-630.
Yanrong JIANG ; Zhenhai ZHANG ; Xiaobin JIA
Acta Pharmaceutica Sinica 2013;48(1):125-30
The compound excipient containing sodium stearyl fumarate and plasdone S-630 was prepared by applying spray drying method. The basic physical properties of compound excipient were studied by solubility test, scanning electron microscope, differential scanning calorimeter, X-ray diffraction and Fourier transform infra-red spectroscopy. The effect of compound excipient on moisture absorption and ferulic acid in vitro dissolution of spray drying power of angelica were investigated. The results showed that the chemical constituents of compound excipient did not change before and after spray drying. The water soluble compound excipient can improve significantly moisture absorption and has application prospect.
3.A glycoprotein from plant(ZPP):study on tumor common antigen
Baoen SHAN ; Zhenhai ZHENG ; Zijie ZHANG
Chinese Journal of Immunology 1985;0(05):-
Objective:Tumor common antigen of an extract of plant and applying in early stage diagnosis for tumor were studied.Methods:Tumor cells and lymphocytes proliferate responses were determined by 3H-TdR intervening.Fresh tumor tissue from human transplant to mice,the survival rate of transplanted tumor was observed.DNA content of tumor cells was measured by flowcytometery.The chemical nature was analyzed by chromatography and measured by ultraviolet-spectrometer.Results:The extract of plant markedly stimulated the lymphocytes from tumor patients and atypical hyperplasia patient to proliferate,but failed to health persons(P
4.Netilmicin in the prevention of postoperative infection
Zhenhai YU ; Shujuan SUN ; Shuguang ZHANG
Chinese Journal of General Surgery 2000;0(12):-
Objective To determine the optimum administration modality of netilmicin (NTM) by comparing the blood concentration, bactericidal activity, clinical effect and adverse reactions at two different regimen. MethodSerum concentration was determined by TDx (Fluorescence Polarization Immunoassy Technology). Serum bactericidal activity (SBA) was determined by microdilution method. ResultAll trough concentrations were
5.Effects of various surgical procedures on portal hemodynamics in patients with portal hypertension
Shuguang ZHANG ; Changle RUAN ; Zhenhai YU
Chinese Journal of General Surgery 1993;0(03):-
ObjectiveTo study the effects on hemodynamics of portal venous system of splenorenal shunt plus pericardia devascularization (SRS+PCDV), and evaluate the clinical significance of this operative procedure.MethodsThe hemodynamic parameters of portal venous system by Doppler color-flow imaging (DCFI) of 99 patients with portal hypertension (PH) were measured before and after operation.Results(1)In SRS group the postoperative portal venous flow (PVF), free portal pressure(FPP) decreased by (57?9)%, (52?5)% respectively (P0.05).(3)In SRS+PCDV group PVF,FPP decreased by (36?8)%, (34?10)% respectively(P
6.Extraction process of Radix Salviae Miltiorrhizae with the aid of cyclodextrion
Zhenhai ZHANG ; Li LIU ; Desheng XU
Chinese Traditional Patent Medicine 1992;0(03):-
AIM: To study extraction process with the aid of cyclodextrin (EPAC) of Radix Salvias Miltiorrhizae. METHODS: Taking tanshinone Ⅱ_A, Danshensu, dry extract as the indexes, EPAC and water extraction process(WEP) were compared. RESULTS:The index of tanshinone Ⅱ_A of EPAC was better than WEP in extract, but there was not obvious difference in the indexes of Danshensu and dry extract. CONCLUSION:EPAC is worth researching further.
7.In situ rat intestine absorption of paclitaxel-loaded solid lipid nanoparticles modified with cell-penetrating peptides.
Caocao LI ; Zhenhai ZHANG ; Yinlong ZHANG ; Huixia Lü ; Jianping ZHOU
Acta Pharmaceutica Sinica 2013;48(1):131-7
To investigate the rat intestinal absorption of stearic acid-octaarginine (SA-R8) modified solid lipid nanoparticles containing paclitaxel (SA-R8-PTX-SLN), compared with the commercially available preparation of PTX (Taxol) and PTX-loaded solid lipid nanoparticles (PTX-SLN), the in situ intestinal absorption of SA-R8-PTX-SLN was investigated by means of single-pass rat intestinal perfusion technique. The absorptions of the preparations were investigated at different intestinal segments, different drug concentrations and in the presence of P-glycoprotein inhibitor (verapamil). The results showed that PTX could be absorbed at each intestinal segment and the three preparations all showed maximum absorptions at the duodenum. The cumulative absorptions of three preparations at each intestinal segment appeared SA-R8-PTX-SLN > PTX-SLN > Taxol (P < 0.05). SA-R8-PTX-SLN showed a liner absorption manner at the duodenum in the examined drug concentration range. The cumulative absorptions of Taxol and PTX-SLN were significantly promoted after the addition of P-glycoprotein inhibitor (verapamil) into the preparation (P < 0.05), but absorption of SA-R8-PTX-SLN existed no significantly difference compared with the preparation without verapamil (P > 0.05). SA-R8 and SLN might both effectively improve the oral absorption of PTX in the intestinal tract.
8.Long-term effect of combined portoazygous devuscularization and shunt for treatment of portal hypertension.
Shuguang ZHANG ; Changle RUAN ; Zhenhai YU ; Guangxing LI ; Zhaoting LI
Chinese Journal of Practical Surgery 2001;21(3):147-148
ObjectiveTo evaluate the therapeutic effect of combined portoazygous devascularization and shunt on portal hypertension. MethodsThe data of 56 cases of portal hypertension treated with portoazygous devascularization and shunt from April 1987 to April 1999 was summarized. ResultsThere was no death in 54 patients receiving selective operation;of 2 cases receiving emergency operation, one died. Among 49 followed-up cases, there was one rebleeding,2 hepatic encephalopathy, and one died of liver failure 4 years after opeation. The mean portal pressure before and after operation was(3.42±0.46) kPa and (2.50±0.35) kPa, respectively. ConclusionCombined portoazygons devascularization and shunt not only decreases portal pressure but preserve hepatic blood flow to some extent.
9.An overview of glycoconjugates for cancer targeting therapy and diagnosis.
Weiqin WANG ; Zhenhai ZHANG ; Jianping ZHOU ; Hui PANG ; Huixia Lü
Acta Pharmaceutica Sinica 2013;48(12):1763-70
Because of the changed metabolic behaviors of cancer cells, tumor cells uptake a corresponding larger amount of glucose in physiological condition when compared with normal cells. And they were prone to metabolize glucose for generating energy in anaerobic glycolysis ways in order to grow quickly. Anaerobic glycolysis consumes more glucose than aerobic way when the same amount of energy is obtained, which also results in large demand of glucose in tumor cells. This review briefly describes therapy methods related to characteristic mentioned above, and summarizes the research progress of drugs, diagnostic reagents and carriers conjugated with glucose, glucose derivatives or other kinds of sugars for cancer targeting. Furthermore, typically relative research reports from 2012 till now were listed and analyzed.
10.The effects and its mechanism of N-arginine chitosan as transdermal enhancer.
Fengyi CHENG ; Zhenhai ZHANG ; Jianping ZHOU ; Huixia Lü
Acta Pharmaceutica Sinica 2013;48(8):1325-32
The purpose of this study is to investigate the penetration effects and mechanism of N-arginine chitosan (ACS). This novel transdermal enhancer with a mimetic structure of cell-penetration peptides was synthesized by introducing hydrophilic arginine groups to the amino-group on chitosan's side chain. The structure of ACS was confirmed by FT-IR, 1H NMR and element analysis. In addition, attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) was used to study the protein conformation and the water content of stratum corneum, and the result suggested that ACS can change the orderly arrangement of the molecules in the stratum corneum, making the stack structure of keratin become loose. And ACS can increase the water content of the stratum corneurn. Inverted fluorescence microscope and flow cytometry were used to examine penetration effect of ACS on Hacat cell. The result confirmed that the uptake of ACS was enhanced with increased substitution degree of arginine by 4-8 folds compared to chitosan. In vitro penetration studies on three electrical types of drugs were carried out using three model drugs of negatively charged aspirin, positively charged terazosin and neutral drug isosorbide mononitrate by the method of Franz diffusion cells. The results showed that ACS has obviously penetration of the negatively charged drug aspirin, and certain penetration of neutral drug issorbide mononitrate, but inhibition of positively charged terazosin. In vivo imaging technology research results show that the ACS can significantly enhance the fluorescence intensity of morin, which is the auto-fluorescence anionic drug. These obtained results suggested that ACS, as a promising transdermal enhancer, can change the structure of the keratinocytes and analog penetrating peptides promote absorption, but have certain selectivity for the drug.